Molecular Topology Tuning of Bipolar Host Materials Composed of Fluorene-Bridged Benzimidazole and Carbazole for Highly Efficient Electrophosphorescence
作者:Ejabul Mondal、Wen-Yi Hung、Yang-Huei Chen、Ming-Hung Cheng、Ken-Tsung Wong
DOI:10.1002/chem.201300738
日期:2013.8.5
bipolar host for blue‐to‐red phosphors. With a common device configuration, CzFNBI has been utilized to achieve highly efficient and low‐roll‐off devices with external quantum efficiency as high as 14 % blue, 17.8 % green, 16.6 % yellowish‐green, 19.5 % yellow, and 18.6 % red. In addition, by combining yellowish‐green with a sky‐blue emitter and a red emitter, a CzFNBI‐hosted single‐emitting‐layer all‐phosphor